Theater light



2 Sheets-Sheet 1 LIN.

JOHN H. KLIEGL J. H. KLIEGL THEATER LIGHT @3M lub @Wto/mmf Comm, (uw*15u/1M.

Jan. 13, 1931.

Filed April 13, 1928 lhlll FIG.2.

J. H. KLIEGL THEATER LTGHT Jan. 13, 1931.

2 Sheets-Sheet 2 Filed April 13, 1928 .all l n l FIG,

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Patented Jan. 13, 1931 UNITED STATES Ae@FFHIE JOHN E. KLIEGL, F NEWYORK, N. Y., ASSIGNOR T0 KLIEGL BROS. UNIVERSAL :ELEG-` TRIC STAGELIGHTING C0., INC., 0F NEw-xYoRK, N.' Y., LA, CORPOBATIONOF NEW YORKApplication led .April 13,

This invention pertains to lights such as border lights vused intheaters for providing illumination for the stage. Such lights areusually supplied with color mediums in the i. form of circular glasslenses adapted to be easily removed and replaced by lenses of differentcolor. A theater usually has on hand a supply of lenses of standardcolors such as clear, red, blue, etc., and can therela fore readilyprovide illumination in any of those colors. Occasionally, however, atheater is required, often on short notice, to supply stage illuminationof colors different from what they have on hand. Under such i lconditions there is no time to procure glass j lenses of proper color,nor would it be practical to do so even if time were suflicient, onaccount of the prohibitive expense of buying equipment for onlytemporary use.

To meet such circumstances I provide the light structure, with devicesadapted to support a plain glass or gelatin medium in place of theregular lens, `thereby affording the theater a ready, inexpensive, andacceptable 55 means of tiding over an emergency, because plain-coloredglass or gelatin mediums are readily obtainable at moderate cost and maybe readily out to size and shape suitable for use in my device. v

Further and other objects and advantages will be hereinafter set forthin the accompanying specification and claim, and shown in the drawings,which by way of illustration show what is now considered to be thepreferred embodiment of the invention.

Fig. 1 is a cross-section of the complete light with standard equipment,with my improvement added.

' Fig. 2 is a fragmentary view of the lower portion of Fig. 3, withglass retaining slides in displaced position.

Fig. 3 is a front view of the glass retaining slides, partly brokenaway, with a sheet v of glass or gelatin in position between them.

Fig. 4 is a section on the line 4 4 of Fig. 3.

Fig. 5 is a section on the line 5 5 of Fig. 3.

Referring to Fig. 1, is a lamp bulb held in position in a reflector 12.The open end THEATER fm-Grrr 'l 192s. serial No. 269,666.

of the reflector is provided witha cylindrical recess 14 joined 'to thereflector in such manner as to jrovide ashoulder 16. A radial rim 18exten s radiallyoutwardly'from'the face of the cylinder portion of thereflector. A. colored glass mediumin the form of alens 20 is placedagainst shoulder 16 within vcylindrical recess 14. Lens 20 is held inplace by a resilient Wire split ring 22 ofvv familiar design, the ringbeing adapted to snap into position between lens 2O and a frame 24 whichis secured to the front of flange 18 by rivets 26 or otherwise. The faceof frame 24 adjacent iiange 18 is yprovided with a circular opening ofslightly less diameter than cylindrical recess 14, thereby forming ashoulder 28 which retains ring 22 in position while the ring isexpanded, the ring, in turn, holding the lens in position. The splitring may be collapsed by pinching together its two projecting ends 30whereupon the lens may be removed through the opening in flange 28.

The forwardly projecting portion of frame 24 is shaped to form twoparallel channel guides 32 having front flanges 34. Arranged` to enterchannels 32 and be retained thereby is a slide 36 having its lateraledges 38 folded over to form guides for another slide 40 adapted toenter and be retained by edges 38. The lower edge of slide 36 isupturned as at 42 to serve as a stop for slide 40. The upper end ofslide 36 has a rearwardly extending lip 44 to serve as a handle and toact as a supporting stop when the slides are in operative position. Theedges of slide 40 are bent over as at 46 to stillen the slide. Slides 36and 40 are provided with circular openings'of substantially the samediameter as the open end of the reliector.

Fig. 1 shows the light arranged for regulary operation with colored lens2O in position.v For emergency service as above described, lens 20 andretaining ring 22 are removed, and a rectangular colored glass orgelatin medium is placed between metal slides 36 and 40, which are thendropped into position in channels 32 as vshown in Fig. 4.

Soldered as at 52 to slides 36 and 40 are l' cross Wires 54 to aid inkeeping the gelatin medium in' proper position and prevent its warping.

It is to be understood that the invention is not limited to theconstruction herein specifically illustrated and described but can beembodied in Vother forms Without departure from its spirit, as expressedby the claim.'

I claimv In a light of the kind described, in coinbination, a reflectorhaving a circular recess at its 4 open end, a circular color mediumadapted to enter said recess, a frame vattached to the open end ofsaidreflector, a resilient split ring adapted to engage the inner side ofsaid frame and the outer side of said circular medium to retain saidmedium in Vsaid recess, a rectangular color medium, and

devices for supporting said rectangular medium in said frame for thepurpose set forth.

In testimony whereof I hereto affix my signature.

JOHN H. KLIEGL.

